clang/test/SemaCXX/warn-pure-virtual-kext.cpp

   1 // RUN: %clang_cc1 %s -fapple-kext -fsyntax-only -verify
   2
   3 struct A {
   4     virtual void f() = 0; // expected-note {{'f' declared here}}
   5     A() {
   6         A::f(); // expected-warning {{call to pure virtual member function 'f' has undefined behavior; overrides of 'f' in subclasses are not available in the constructor of 'A'}} // expected-note {{qualified call to 'A'::'f' is treated as a virtual call to 'f' due to -fapple-kext}}
   7     }
   8 };
   9
  10 template <typename T> struct TA {
  11   virtual void f() = 0; // expected-note {{'f' declared here}}
  12
  13   TA() { TA::f(); } // expected-warning {{call to pure virtual member function 'f' has undefined behavior; overrides of 'f' in subclasses are not available in the constructor of 'TA<int>'}} // expected-note {{qualified call to 'TA<int>'::'f' is treated as a virtual call to 'f' due to -fapple-kext}}
  14 };
  15
  16 struct B : TA<int> { // expected-note {{in instantiation of member function 'TA<int>::TA' requested here}}
  17   void f() override;
  18 };
  19
  20 B b;